<html>
  <head>
    
  </head>
<body marginheight="10" marginwidth="10">
<table width="400" border="0" align="center" cellpadding="0" cellspacing="0">
  <tr>
    <td width="154" colspan="2" align="left"><font face="Verdana, Arial, Helvetica, sans-serif" size="4">If oxygen is the limiting reactant, then you are guaranteeing that unburned fuel will come out of the tailpipe, causing pollution. </font>
      <p><font face="Verdana, Arial, Helvetica, sans-serif" size="4">If there is very little oxygen, then you won't be able to get much power out of the little bit of fuel that can actually react with the oxygen. </font> </p></td></tr>
</table>
</body>
</html>
